Ligand-Controlled Chemoselective One-Pot Synthesis of Dibenzothiazepinones and Dibenzoxazepinones via Twice Copper-Catalyzed Cross-Coupling
作者:Yanyu Chen、Qiujun Peng、Rong Zhang、Jian Hu、Yijun Zhou、Lanting Xu、Xianhua Pan
DOI:10.1055/s-0036-1558959
日期:2017.6
from 2-bromobenzamides and 2-bromo(thio)phenols via twice copper-catalyzed couplings to afford dibenzothiazepines and dibenzoxazepinones has been developed. High levels of yield and chemoselectivity are achieved in a single-pot reaction by using an appropriate ligand. Moreover, this facile methodology allows rapid access to a variety of bioactive compounds and known psychotropic drug, which should
Synthesis of 3-Substituted and 2,3-Disubstituted Quinazolinones via Cu-Catalyzed Aryl Amidation
作者:Lanting Xu、Yongwen Jiang、Dawei Ma
DOI:10.1021/ol300084v
日期:2012.2.17
Cul/4-hydroxy-L-proline catalyzed coupling of N-substituted o-bromobenzamides with formamide takes place at 80 degrees C, affording 3-substituted quinazolinones directly. Under these conditions other amides that were tested only provided simple coupling products, which can be converted into 2,3-disubstituted quinazolinones via HMDS/ZnCl2 mediated condensative cyclization.